摘要:解:.比较
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比较下列每组数的大小(写出解答过程,将结果从小到大排列并用小于号连接起来):
(1)a=log
,b=log
,c=log
+log
;
(2)a=(
)-1,b=2
×2-log
÷
,c=7;
(3)a=
,b=
,c=
.
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(1)a=log
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 2 |
| 1 |
| 8 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 5 |
(2)a=(
| 1 |
| 6 |
| 3 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
(3)a=
| 2 |
| 3 | 3 |
| 5 | 5 |